Download GTU BE/B.Tech 2019 Winter 3rd Sem New 3131706 Measurement And Instruments Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 3131706 Measurement And Instruments Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3131706 Date: 30/11/2019

Subject Name: Measurement and Instruments
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Marks

Q.1 (a) Demonstrate Indicating type instruments. 03
(b) Compare: Accuracy and Precision with example. 04
(c) Explain Loading effect and its elimination in AC and DC Meters. 07
Q.2 (a) What is transformer? Write down types and application of
transformers.
03
(b) Explain frequency measurement using Zero beat frequency meter. 04
(c) Explain working principle of PMMC meter in detail with its neat
diagram.
07
OR
(c) Explain Digital multimeter with its block diagram. 07
Q.3 (a) Explain RS 232C Standards in brief 03
(b) Obtain Lissajous pattern using CRO in X-Y mode for frequency
measurement of 2:1, 3:1, 3:2 & 4:1 with its procedure & Waveform.
04
(c) Explain block diagram of CRO with function of each block in
details.
07
OR
Q.3 (a) Identify different techniques for measurement of medium resistance.
Explain any one in detail.
03
(b) Find resistance values for Ayrton shunt to provide an ammeter with
current ranges of 1 A, 5 A and 10 A. A basic PMMC meter with an
internal resistance of 50 Ohm and a full scale deflection current of 1
mA is to be used
04
(c) Explain Kelvin double bridge for low resistance measurement with
neat diagram
07
Q.4 (a) Explain Electronic Timers. 03
(b) Explain Hay?s bridge method to measure unknown Inductance. 04
(c) Explain Schering bridge method to measure unknown capacitance
with its circuit diagram and calculations.
07
OR
Q.4 (a) Explain Distortion Analyzer with example. 03
(b) Explain Sweep frequency generator. 04
(c) Explain Universal Timer-Counter with its block diagram. 07
Q.5 (a) Explain Conductive coupling interference with example. 03
(b) What is Inductive Interference? Explain How it can be reduced. 04
(c) What is Current transformer? Explain its working with construction
diagram.
07
OR
Q.5 (a) Explain Ground level interference in brief. 03
(b) Explain Power factor measurement using Analog meter. 04
(c) Explain 3 ? Phase Power measurement using 2 watt meter method
with necessary diagrams.
07
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